IBM 4332-004 User Guide - Page 266
Mcu Failed / Power Off/on
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Page 266 highlights
511 LASER FAILED / POWER OFF/ON Meaning: The printer has detected a problem with the laser. Action: Switch the printer off, then on again. If this does not correct the problem, call for service. 512 LASER FAILED / POWER OFF/ON Meaning: The printer has detected a problem with the laser. Action: Switch the printer off, then on again. If this does not correct the problem, call for service. 513 LASER FAILED / POWER OFF/ON Meaning: The printer has detected a problem with the laser. Action: Switch the printer off, then on again. If this does not correct the problem, call for service. 514 LASER FAILED / POWER OFF/ON Meaning: The printer has detected a problem with the laser. Action: Switch the printer off, then on again. If this does not correct the problem, call for service. 520 LASER FAILED / POWER OFF/ON Meaning: The printer has detected a problem with the laser. Action: Switch the printer off, then on again. If this does not correct the problem, call for service. 560 MCU FAILED / POWER OFF/ON Meaning: The printer has detected a problem with the machine control unit. Action: Switch the printer off, then on again. If this does not correct the problem, call for service. 561 RAM FAILED / POWER OFF/ON Meaning: The printer has detected a memory error. Action: Switch the printer off, then on again. If this does not correct the problem, call for service. 620 MEMORY SIMM / RESEAT SIMM Meaning: A SIMM module is not properly seated in its slot or is in some other way defective. Action: Switch the printer off. Pull out the controller card. Reseat the SIMM module and power on the printer. See "Installing a SIMM" on page 167. If the message recurs after you restart the printer, call for service. 621 MEMORY ERROR / CHECK MEMORY Meaning: Memory overflow. The printer has received more data than 254 Infoprint 32 and Infoprint 40: User's Guide
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